OUT-OF-BALANCE COPPER ORES LEACHING- A CASE STUDY FOR THE ORE DEPOSIT 'KRAKU BUGARESKU'

摘要

Long-term column leaching of low grade oxide-sulphide copper ores from the ore deposit "Kraku Bugaresku " is carried out by the use of H_2SO_4 solutions as a leaching agent. Change of the pH and its adjustment to the initial value allowed estimation the acid consumption in the process. Chemical composition of the leach solutions, averaged process rates, leaching degree, and other relevant data are evaluated from experimental data.